Component DLL not found

[krabinowitz1]

Environment data

dotnet --info output:

.NET SDK:
Version: 9.0.304
Commit: f12f5f689e
Workload version: 9.0.300-manifests.70d87660
MSBuild version: 17.14.16+5d8159c5f

Runtime Environment:
OS Name: azurelinux
OS Version: 3.0
OS Platform: Linux
RID: linux-x64
Base Path: /usr/share/dotnet/sdk/9.0.304/

.NET workloads installed:
There are no installed workloads to display.
Configured to use loose manifests when installing new manifests.

Host:
Version: 9.0.8
Architecture: x64
Commit: aae90fa090

.NET SDKs installed:
9.0.304 [/usr/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 9.0.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 9.0.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
None

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

VS Code version:

1.103.2
6f17636121051a53c88d3e605c491d22af2ba755
x64

C# Extension version: 2.87.31

C# logs

C# output window contents:

2025-09-08 04:39:23.400 [info] Installing C# dependencies...
2025-09-08 04:39:23.400 [info]

2025-09-08 04:39:23.400 [info] Platform: linux, x86_64, name=azurelinux, version=3.0

2025-09-08 04:39:23.400 [info]

2025-09-08 04:39:23.400 [info] Downloading package 'Language server for Roslyn Copilot integration'
2025-09-08 04:39:38.639 [info] Failed at stage: downloadPackage

2025-09-08 04:39:38.639 [info] Error: connect ECONNREFUSED 57.150.149.97:443

2025-09-08 04:39:38.639 [info]

2025-09-08 04:40:02.407 [info] Locating .NET runtime version 9.0.1
2025-09-08 04:40:02.870 [info] Dotnet path: /usr/share/dotnet/dotnet
2025-09-08 04:40:02.870 [info] Activating C# + C# Dev Kit...
2025-09-08 04:40:04.840 [info] [Error - 4:40:04 AM] Microsoft.CodeAnalysis.LanguageServer client: couldn't create connection to server.
2025-09-08 04:40:04.840 [info] Error: Component DLL not found: /root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/.roslynCopilot/Microsoft.VisualStudio.Copilot.Roslyn.LanguageServer.dll
at O0 (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:1222:9455)
at Function.setupDevKitEnvironment (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:1227:26652)
at processTicksAndRejections (node:internal/process/task_queues:105:5)
at Function.startServer (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:1227:21112)
at l (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:1227:15089)
at S4.createConnection (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:86:11885)
at S4.start (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:86:1864)
at Function.initializeAsync (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:1227:15602)
at hBe (/root/.vscode-server/extensions/ms-dotnettools.csharp-2.87.31-linux-x64/dist/extension.js:1227:37772)

Steps to reproduce

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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

A clear and concise description of what you expected to happen.

Actual behavior

Additional context

I saw there was a similar issue for a previous version that supposedly got fixed in the latest version, which is the one I'm using

#8453

[AbhitejJohn]

@krabinowitz1 : Thanks for sharing. Any chance you have a http_proxy env var set to empty as this issue calls out? There was a recent PR to fix that here: #8580

[AbhitejJohn]

@krabinowitz1 : Just wanted to check back with you on the comment from earlier.

[bilby91]

Running into the same issue. Neither HTTP_PROXY or HTTPS_PROXY are defined in my environment.

The strange thing to me about this problem is that happens on some machines but in others it doesn't. Environment are the same because they are based on the same devcontainer specification.

[krabinowitz1]

Hi @AbhitejJohn , I don't have the variable set. I ran the following command in powershell which returned nothing

Get-ChildItem Env: | Where-Object { $_.Name -match 'proxy' }

[JoeRobich]

In the log I see

2025-09-08 04:39:23.400 [info] Downloading package 'Language server for Roslyn Copilot integration'
2025-09-08 04:39:38.639 [info] Failed at stage: downloadPackage

2025-09-08 04:39:38.639 [info] Error: connect ECONNREFUSED 57.150.149.97:443

Is networking working properly in your container? Can you curl this down https://roslyn.blob.core.windows.net/releases/Microsoft.VisualStudio.Copilot.Roslyn.LanguageServer-18.0.701-alpha.zip?